899040 has 48 divisors (see below), whose sum is σ = 2833488. Its totient is φ = 239616.

The previous prime is 899009. The next prime is 899051. The reversal of 899040 is 40998.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 898989 and 899007.

It is a congruent number.

It is an unprimeable number.

899040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457 + ... + 1416.

It is an arithmetic number, because the mean of its divisors is an integer number (59031).

2⁸⁹⁹⁰⁴⁰ is an apocalyptic number.

899040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

899040 is an abundant number, since it is smaller than the sum of its proper divisors (1934448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

899040 is a wasteful number, since it uses less digits than its factorization.

899040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 899040 is about 948.1771986290. The cubic root of 899040 is about 96.5145977362.

The spelling of 899040 in words is "eight hundred ninety-nine thousand, forty".